[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

Struts bean:write tag

Posted on 2004-10-20
7
Medium Priority
?
347 Views
Last Modified: 2013-12-29
I have this tag: <bean:write name="result"/> in one of my JSPs that is being accessed from 2 or more Action objects. One of those Action objects sets the message like so:

String message = "Successful";
request.setAttribute("result", message);

but the other Action objects dont set that bean (ie I don't need any message if it's coming from them), so when the JSP is being called from any of those Action objects, I get a JSP exception that "result" has never been set.

Is there any way around this problem other than setting a blank "result" message in every other Action that forwards to that JSP? What is the proper way of doing this? I don't want to use scripting in my JSP to check if "result" is null.

Thanks.
0
Comment
Question by:Flavaflav
  • 4
  • 3
7 Comments
 
LVL 8

Expert Comment

by:kiranhk
ID: 12363111
you can initialize ur bean variable to a default value so that in case it is not set by any action class it should display the default value
0
 
LVL 8

Expert Comment

by:kiranhk
ID: 12363132
sorry abt the above quote

you can wrap ur bean write tag with the <logic:present> so that it will check out whether it is present and then display it if is there.
0
 

Author Comment

by:Flavaflav
ID: 12363903
I tried doing this:

<logic:present><bean:write name="result"></logic:present>

but I get the following runtime exception: "No selector attribute (cookie/header/name/parameter) was specified".
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 8

Expert Comment

by:kiranhk
ID: 12364039
try this out

<logic:present name="result">
<bean:write name="result"></
</logic:present>


also go thro this

http://struts.apache.org/api/org/apache/struts/taglib/logic/package-summary.html#package_description
0
 

Author Comment

by:Flavaflav
ID: 12364370
Great thanks that worked. While we're on this subject I have another question: Using the bean:write tag, how can I get the property of a property of a bean? For example, I have:

<bean:write name="target" property="dataField">

where dataField is a DataField object belonging to the Target object, but I need to display a certain field from that DataField obj (eg. "description"). Is there a way to do this just using Struts tags, and w/out overriding toString() in DataField to return the description property?
0
 
LVL 8

Accepted Solution

by:
kiranhk earned 400 total points
ID: 12364752
<bean:write name="target" property="dataField.urpropertyname">
0
 

Author Comment

by:Flavaflav
ID: 12364930
Simple enough :>. Thanks.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
In this post we will learn different types of Android Layout and some basics of an Android App.
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
Suggested Courses
Course of the Month20 days, 7 hours left to enroll

868 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question